Re: [PATCH V2 2/5] powerpc, perf: Add basic assembly code to read BHRB entries on POWER8

2013-04-16 Thread Anshuman Khandual
On 04/16/2013 10:53 PM, Segher Boessenkool wrote: >> +/* r3 = n (where n = [0-1023]) >> + * The maximum number of BHRB entries supported with PPC_MFBHRBE >> instruction >> + * is 1024. We have limited number of table entries here as POWER8 >> implements >> + * 32 BHRB entries. >> + */ >> + >> +/*

Re: [PATCH V2 2/5] powerpc, perf: Add basic assembly code to read BHRB entries on POWER8

2013-04-16 Thread Segher Boessenkool
+/* r3 = n (where n = [0-1023]) + * The maximum number of BHRB entries supported with PPC_MFBHRBE instruction + * is 1024. We have limited number of table entries here as POWER8 implements + * 32 BHRB entries. + */ + +/* .global read_bhrb */ +_GLOBAL(read_bhrb) + cmpldi r3,1023 This

[PATCH V2 2/5] powerpc, perf: Add basic assembly code to read BHRB entries on POWER8

2013-04-16 Thread Anshuman Khandual
This patch adds the basic assembly code to read BHRB entries Signed-off-by: Anshuman Khandual --- arch/powerpc/perf/Makefile | 2 +- arch/powerpc/perf/bhrb.S | 44 2 files changed, 45 insertions(+), 1 deletion(-) create mode 100644 arch/powerpc/pe